65% Cotton/35% Polyester The baseball hats rest comfortably on most sized heads and come in a variety of styles,Adjustable faux strap back to adjust for a perfect fit. New York Black 3D Embroidered Baseball Cap. It’s perfect for teams or individuals, for the field or the street. One Size with adjustable strap back. 65%Cotton 35%Polyester. Breathable cotton construction allows heat to escape and air to flow great for outdoor events; New York 3D Embroidered Baseball Cap.